THERESA May's DUP allies have vowed to vote down her Brexit deal - pushing the Government to the verge of collapse.

And the Northern Irish party propping up Mrs May's Tories are set to abstain on key Budget votes again tonight, which almost led to a defeat yesterday.

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Theresa May and Arlene Foster's deal is at breaking point as they confirmed they will vote against her Brexit agreement as it syandsCredit: Reuters

DUP Deputy Leader Nigel Dodds said this afternoon: "With the rejection of the Prime Minister's Withdrawal Agreement on all sides of the House and across all parties, it is increasingly clear this deal does not have support necessary to pass the meaningful vote in Parliament."

He demanded the PM "work for a better deal" and said his party was "appalled at the constitutional implications of the deal".

The 10 DUP MPs which prop up the Government are upset over the draft EU Withdrawal agreement that they believe drives a wedge between Northern Ireland and the rest of Britain.

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Arlene Foster and Nigel Dodds are fuming with what they think are plans to cut Northern Ireland off from the rest of the UKCredit: Reuters

Mr Dodds, who last week accused the PM of "not listening" to their concerns, added cryptically: "The Government will require DUP support to deliver its domestic agenda.

"We will continue to use our influence for the good of everyone across the United Kingdom."

Party sources dubbed Mrs May's new aspiration as "not worth the paper it’s written on”, because the Irish backstop - that puts Northern Ireland under a different set of EU rules to the rest of the UK - would still remain in the divorce deal alongside it.

A senior DUP source told The Sun: "The Withdrawal Agreement has to change. It’s very simple.